I'm trying to troubleshoot why my car goes really lean and has a really lean dwell or lag after gear changes.
I notice that when it was really lean DegC was 130+
I think it might be caused (or a contributing factor) by idle/decel
What is DegC (I know it's not coolant because that seems normal).

Here's a log of me driving from my work to a petrol station (I do this often because E85) Any help would be appreciated.
Thanks